CN217172582U

CN217172582U - Slitting connection platform

Info

Publication number: CN217172582U
Application number: CN202221101070.2U
Authority: CN
Inventors: 王爱民; 徐文明
Original assignee: Yeshili New Material Co ltd
Current assignee: Yeshili New Material Co ltd
Priority date: 2022-05-09
Filing date: 2022-05-09
Publication date: 2022-08-12
Anticipated expiration: 2032-05-09

Abstract

The utility model provides a platform of plugging into is cut to branch belongs to cutting machine technical field. It has solved how to make the convenient problem of film roller change among the prior art. Divide and cut platform of plugging into, including base drive roll subassembly and unreel the roller, be provided with two connecting seats on the base, two the connecting seat is located same one side of drive roll subassembly, it connects respectively on two connecting seats to unreel the roller both ends, unreel roller one end and cup jointed the position sleeve and unreel the roller and can rotate by relative position sleeve, one of them connecting seat can unreel the radial movement of roller relatively in the horizontal direction, and rotate on this connecting seat and be connected with and can fix a position the locating piece of position sleeve location on this connecting seat, be provided with between locating piece and the connecting seat and make locating piece and connecting seat both keep or remove the regulating part to the position sleeve location. The slitting and connecting platform enables the film roller to be replaced conveniently.

Description

Slitting connection platform

Technical Field

The utility model belongs to the technical field of the cutting machine, concretely relates to platform is plugged into in slitting.

Background

After the production of the film is completed, the wide film is usually slit by a slitting rewinder to obtain a film with a smaller width.

The existing slitting rewinder comprises a rack, an unwinding roller, a traction roller, a cutting device, a rewinding roller and a driving device, wherein a film is unwound by the unwinding roller and is moved to the cutting device to be cut according to a set specification under the traction action of the traction roller, and then rewinding and winding are carried out by the rewinding roller. The cutting device comprises a lower knife roll and a plurality of cutting knives which are arranged on the rack in a sliding mode along the axial direction of the lower knife roll, the rewinding roll is arranged on the upper side of the lower knife roll, and the driving device is used for driving the unwinding roll and the rewinding roll to rotate.

The existing slitting rewinder has the disadvantages that the connecting sleeves are sleeved at the two ends of the unwinding roller and fixed on the unwinding roller frame through screws, the unwinding roller is also connected with the driving device, when a film in the film roller arranged on the unwinding roller is slit, the whole unwinding roller needs to be detached from the unwinding roller frame when the film roller is replaced, the connection between the unwinding roller and the driving device needs to be detached at first, then the connection between the two connecting sleeves and the unwinding roller frame is detached, the film roller is replaced after the unwinding roller is detached from the unwinding roller frame, then the two connecting sleeves are fixed on the unwinding roller through screws again, and finally the driving device is connected with the unwinding roller, so that the unwinding roller needs to be detached repeatedly when the film roller is replaced, and the replacement is troublesome.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a there is above-mentioned problem to current technique, has proposed a cut platform of plugging into, the utility model aims to solve the technical problem that: how to facilitate the replacement of the film roll.

The purpose of the utility model can be realized by the following technical proposal:

the utility model provides a cut platform of plugging into, includes base drive roll subassembly and unreeling roller, its characterized in that, be provided with two connecting seats on the base, two the connecting seat is located same one side of drive roll subassembly, unreel the roller both ends and connect respectively on two connecting seats, unreel roller one end and cup jointed the position sleeve and unreel the roller and can rotate by relative position sleeve, one of them connecting seat can unreel the radial movement of roller relatively in the horizontal direction, and rotate on this connecting seat and be connected with and can fix a position the locating piece of position sleeve location on this connecting seat, be provided with between locating piece and the connecting seat and make both keep or relieve the regulating part to the position sleeve location with the connecting seat.

The film roller is installed, the positioning sleeve is positioned by the positioning block and the connecting seat at one connecting seat of the adjusting piece, the positioning block rotates, the connecting seat moves towards the radial direction of the unwinding roller, the connecting seat is far away from one end of the unwinding roller, the positioning sleeve is moved out, the other connecting seat is still in a fixed state, the film roller can be directly installed from one end of the unwinding roller, the positioning sleeve is sleeved after the film roller is installed, the connecting seat is moved, the positioning block is rotated to position the positioning sleeve on the connecting seat, the positioning block and the connecting seat keep positioning the positioning sleeve by the adjusting piece, after the positioning is completed, a film on the film roller is unfolded and connected onto a transmission roller assembly, the cutting processing of the film is carried out at the cutting position through the transmission roller assembly, when the film roller is required to be replaced, the steps can be replaced, only one connecting seat needs to be used for removing the positioning sleeve corresponding to the positioning sleeve, after shifting out the position sleeve, the film roller is directly packed into from the one end of unreeling the roller, then cup joints the location again on unreeling the roller, again to the position sleeve go on the location again can, need not whole dismantlement unreel the roller, again the installation unreel the roller to it is comparatively convenient to make the film roller change.

In the splitting and connecting platform, the outer surface of the positioning sleeve is provided with an annular groove, the positioning block and the connecting seat are respectively provided with a clamping groove, and the annular groove of the positioning sleeve is respectively embedded into the clamping groove on the positioning block and the clamping groove on the connecting seat. The clamping groove on the positioning block and the clamping groove on the connecting seat ensure that the positioning block is matched and connected with the annular groove arranged on the outer surface of the positioning sleeve, and the positioning of the unwinding roller is ensured.

In the slitting and connecting platform, the bearings are arranged at the two ends of the positioning sleeve, and the unwinding roller is connected to the two bearings in a penetrating manner. The stability of the rotation of the unwinding roller is ensured.

In foretell platform of plugging into of cutting, have two stands that set up relatively on the base, all be provided with the guide way on two stands, two the connecting seat respectively with two guide way sliding connection, radially set up along unreeling the roller on one of them stand the guide way, and be provided with the lead screw on this stand, the connecting seat bottom that corresponds with this stand is fixed with the lead screw nut with screw connection, the one end of lead screw is provided with operating handle. The manual operation operating handle makes lead screw nut along the lead screw transmission to make the connecting seat remove to unreel the roller radial direction relatively.

In foretell platform of plugging into of cutting, the regulating part includes lock nut and locating lever, the recess has on the connecting seat, in the one end embedding recess of locating lever, be provided with the connecting pin in the recess, the locating lever rotates to be connected on the connecting pin, the notch has on the locating piece, the locating lever can imbed in the notch, lock nut makes with the other end threaded connection of locating lever the annular groove department of position sleeve imbeds respectively in the draw-in groove on the locating piece and the draw-in groove on the connecting seat. The positioning sleeve that unreels roller one end and cup joints is located between connecting seat and the locating piece, rotates the locating lever and makes the notch on the locating piece of locating lever embedding, makes the unreeling roller location on the connecting seat that corresponds through the other end spiro union of lock nut and locating lever, unreels the roller and breaks away from and corresponds the connecting seat location time, makes lock nut loosen and be connected with the locating lever, rotates the locating piece, moves the connecting seat, just so can carry out the change of film roller.

In the slitting and connecting platform, the other end of the unwinding roller is connected with a driving piece, and the driving piece is a servo motor or a speed reducer. The driving piece controls the rotating speed of the unwinding roller, so that the film on the unwinding roller is ensured to be conveyed at a proper speed, and the slitting processing is ensured to be reliable.

In foretell platform of plugging into of cutting, another rotate on the connecting seat and be connected with the stopper, the bayonet socket has on the stopper, also cup jointed foretell position sleeve on the other end of unreeling the roller, in the annular groove department embedding bayonet socket of this position sleeve, another rotate on the connecting seat and be connected with the check lock lever, the breach has on the stopper, the check lock lever is embedded into in the breach, the spiro union has adjusting nut to make the stopper fix a position the position sleeve on another connecting seat on the check lock lever. The bayonet on the limiting block is matched with the annular groove of the positioning sleeve, the locking rod is rotated to enable the locking rod to be embedded into the notch, the limiting block is enabled to position the positioning sleeve on another connecting seat through the adjusting nut, the adjusting nut is loosened, the locking rod is rotated, and then the limiting block is rotated, so that the positioning of the end of the unwinding roller is relieved.

In foretell platform of plugging into of cutting, still be provided with the depression bar that can reciprocate on the base and the depression bar can move down and lean on with the base looks pressure, all be connected with the cylinder at the both ends of depression bar on the base, still be provided with the controller that controls the cylinder on the base. The controller controls the pressing rod to move upwards or downwards, the pressing rod is controlled simply and conveniently, when the film roller needs to be replaced, the residual film is pressed on the base to be fixed through downwards moving the pressing rod, and after a new film roller is replaced, the film of the new film roller is connected with the residual film through the adhesive tape, so that the continuity of slitting processing is realized.

In foretell platform of plugging into of cutting, the driving roller subassembly includes first driving roller, second driving roller and third driving roller, first driving roller, second driving roller and third driving roller all rotate to be connected on the base, be provided with deviation correcting device on the base, deviation correcting device is located second driving roller department, it is connected with the regulating roller still to rotate on the base, the regulating roller is located between unreeling roller and two depression bars. The film transmission conveying is guaranteed through the first transmission roller, the second transmission roller and the third transmission roller, the tensioning force of the film on the first transmission roller, the second transmission roller and the third transmission roller is detected through the deviation correcting device, the transmission speed can be adjusted according to the tensioning force, the film is driven at a proper speed, and the film is guaranteed to be in a proper tensioning state after being driven to the transmission roller assembly through the adjusting roller.

Compared with the prior art, the cutting and connecting platform has the following advantages:

only need make one of them connecting seat relieve the position of the position sleeve to corresponding, shift out the position sleeve after, directly pack into the film roller from the one end of unreeling the roller, then cup joint the position again on unreeling the roller, fix a position the position sleeve again and can accomplish the change of film roller, need not wholly to dismantle unreeling the roller, reinstallate unreel the roller again to it is comparatively convenient to make the film roller change.

Drawings

Fig. 1 is an exploded view of the present singulation interface platform.

Fig. 2 is a schematic structural diagram of the present cutting and docking platform.

Fig. 3 is a schematic structural view of the present cutting and docking platform in another direction.

Fig. 4 is an enlarged view of a portion a of fig. 1.

Fig. 5 is an enlarged view of a portion B of fig. 1.

In the figure, 1, a base; 2. unwinding the roller; 3. a connecting seat; 31. a groove; 4. positioning blocks; 41. a recess; 5. an adjustment member; 51. locking the nut; 52. positioning a rod; 6. a positioning sleeve; 61. an annular groove; 62. a bearing; 7. a card slot; 8. a guide groove; 9. an operating handle; 10. a connecting pin; 11. a limiting block; 111. a bayonet; 112. a notch; 12. a locking lever; 13. adjusting the nut; 14. a drive member; 15. a cylinder; 16. a controller; 17. a first drive roller; 18. a second driving roller; 19. a third driving roller; 20. a deviation correcting device; 21. a regulating roller; 211. a rubber sleeve; 22. a pressure lever; 23. a column; 24. mounting rack

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1-5, a slitting connection platform comprises a base 1, a transmission roller assembly and an unwinding roller 2, wherein the base 1 is provided with two connecting seats 3, the two connecting seats 3 are located on the same side of the transmission roller assembly, the base 1 is provided with two opposite upright posts 23, each upright post 23 is provided with a guide groove 8, the two connecting seats 3 are respectively connected in the two guide grooves 8 in a sliding manner, the guide groove 8 on one upright post 23 is arranged in the horizontal direction in the radial direction relative to the unwinding roller 2, the upright post 23 is connected with a lead screw, the bottom of the connecting seat 3 is fixed with a lead screw nut connected with the lead screw, one end of the lead screw is provided with an operating handle 9, the lead screw nut is driven by manually operating the operating handle 9 to drive the lead screw nut along the lead screw, so that the connecting seat 3 moves in the radial direction relative to the unwinding roller 2, the guide groove 8 on the other upright post 23 is arranged along the axial direction of the unwinding roller 2, a screw rod is screwed on the other upright column 23, an operating handle 9 is arranged at the outer end of the screw rod, a gear is arranged at the inner end of the screw rod, a rack matched with the gear is arranged at the bottom of the corresponding connecting seat 3, the connecting seat 3 can slide on the base 1 to adjust the distance between the two connecting seats 3, and a space for installing the gear and a space for moving the screw nut are respectively arranged in the two upright columns 23.

The two ends of the unwinding roller 2 are sleeved with positioning sleeves 6, two ends of each positioning sleeve 6 are provided with bearings 62, two ends of the unwinding roller 2 are respectively connected on the bearings 62 arranged in the corresponding positioning sleeves 6 in a penetrating way, so that the rotating stability of the unwinding roller 2 is ensured, the outer surface of each positioning sleeve 6 is provided with an annular groove 61, one connecting seat 3 is rotatably connected with a positioning block 4 capable of positioning the positioning sleeve 6 on the connecting seat 3 through a pin shaft, an adjusting piece 5 capable of enabling the positioning block 4 and the connecting seat 3 to keep or release the positioning of the positioning sleeve 6 is arranged between the positioning block 4 and the connecting seat 3, the adjusting piece 5 comprises a locking nut 51 and a positioning rod 52, the connecting seat 3 is provided with a groove 31, one end of the positioning rod 52 is embedded into the groove 31, a connecting pin 10 is arranged in the groove 31, the positioning rod 52 is rotatably connected on the connecting pin 10, and the positioning block 4 is provided with a notch 41, the positioning rod 52 can be embedded into the notch 41, the positioning block 4 and the connecting seat 3 are both provided with a clamping groove 7, the locking nut 51 is in threaded connection with the other end of the positioning rod 52 to enable the annular groove 61 of the positioning sleeve 6 to be respectively embedded into the clamping groove 7 on the positioning block 4 and the clamping groove 7 on the connecting seat 3, the positioning sleeve 6 sleeved at one end of the unwinding roller 2 is positioned between the connecting seat 3 and the positioning block 4, the positioning rod 52 is rotated to enable the positioning rod 52 to be embedded into the notch 41 on the positioning block 4, the positioning sleeve 6 at one end of the unwinding roller 2 is positioned on the corresponding connecting seat 3 by the screw connection of the locking nut 51 and the other end of the positioning rod 52, when the positioning sleeve 6 sleeved at one end of the unwinding roller 2 is separated from the positioning of the corresponding connecting seat 3, the locking nut 51 is loosened from the connection with the positioning rod 52, the positioning rod 52 is rotated, the positioning block 4 is rotated, the connecting seat 3 is moved, and the positioning sleeve 6 is moved out, so that the film roll can be directly replaced.

The other connecting seat 3 is rotatably connected with a limiting block 11, the limiting block 11 is provided with a bayonet 111, the annular groove 61 of the positioning sleeve 6 sleeved at the corresponding end of the unwinding roller 2 is embedded into the bayonet 111, the other connecting seat 3 is rotatably connected with a locking rod 12, the limiting block 11 is provided with a notch 112, the locking rod 12 is embedded into the notch 112, the locking rod 12 is screwed with an adjusting nut 13 to ensure that the limiting block 11 positions the positioning sleeve 6 on the other connecting seat 3, the bayonet 111 on the limiting block 11 is matched with the annular groove 61 of the positioning sleeve 6, the locking rod 12 is rotated to enable the locking rod 12 to be embedded into the notch 112, the positioning sleeve 6 is positioned on the other connecting seat 3 by the limiting block 11 through the adjusting nut 13, the adjusting nut 13 is loosened, the locking rod 12 is rotated, and then the limiting block 11 is rotated, so that the positioning of the positioning sleeve 6 at the corresponding end of the unwinding roller 2 is released.

The other end of unreeling roller 2 is connected with driving piece 14, and driving piece 14 is servo motor or speed reducer, and the rotational speed of unreeling roller 2 is controlled to driving piece 14, has guaranteed to unreel on the roller 2 film at suitable conveying speed, guarantees to cut processing reliably.

The base 1 is also provided with two pressure rods 22 capable of moving up and down, the pressure rods 22 can move down to press against the base 1, the two pressure rods 22 are connected with the air cylinders 15 at two ends of each pressure rod 22 on the base 1, the base 1 is provided with the controller 16 for controlling the air cylinders 15, the controller 16 is connected with the air cylinders 15 through pipelines, the controller 16 controls the pressure rods 22 to move up or down, the control on the pressure rods 22 is conveniently realized, when the film roll needs to be replaced, the rest film is pressed on the base 1 through the downward movement of the pressure rods 22, and after the new film roll is replaced, the film of the new film roll is connected with the rest film through an adhesive tape, so that the continuity of cutting processing is realized.

The driving roller assembly comprises a first driving roller 17, a second driving roller 18 and a third driving roller 19, the first driving roller 17, the second driving roller 18 and the third driving roller 19 are all rotatably connected to the base 1, the second driving roller 18 is located between the first driving roller 17 and the third driving roller 19, a mounting frame 24 is arranged on the base 1, a deviation correcting device 20 is mounted on the mounting frame 24 and located at the position of the second driving roller 18, the deviation correcting device 20 is an existing commonly-used component, an adjusting roller 21 is further rotatably connected to the base 1, a rubber sleeve 211 is sleeved on the adjusting roller 21, the adjusting roller 21 is located between the unwinding roller 2 and the two pressing rods 22, the adjusting roller 21 ensures that a film is in a proper tensioning state after being driven to the driving roller assembly, the first driving roller 17, the second driving roller 18 and the third driving roller 19 ensure film transmission, the deviation correcting device 20 enables the film to be in a state of the first driving roller 17, the second driving roller 18 and the third driving roller 19, The tension of the second driving roller 18 and the third driving roller 19 is detected, and the driving speed of the unwinding roller 2 can be adjusted according to the tension, so that the film is driven at a proper speed, and the film is stably driven.

Installing the film roller, loosening the connection between the locking nut 51 and the positioning rod 52, rotating the positioning block 4, moving the corresponding connecting seat 3 through the operating handle 9, keeping the end of the connecting seat 3 corresponding to the unwinding roller 2 away, moving out the positioning sleeve 6 at one end of the unwinding roller 2 because the other connecting seat 3 is still in a fixed state, directly loading the film roller from one end of the unwinding roller 2, after loading the film roller, re-sleeving the positioning sleeve 6, moving the connecting seat 3 through the operating handle 9, positioning the positioning sleeve 6 between the connecting seat 3 and the positioning block 4, rotating the positioning rod 52 to embed the positioning rod 52 into the notch 41 on the positioning block 4, positioning the unwinding roller 2 on the corresponding connecting seat 3 through the threaded connection between the locking nut 51 and the other end of the positioning rod 52, after the film on the film roller is unfolded and connected to the transmission roller assembly, and cutting the film is performed through the transmission of the transmission roller assembly to the cutting position, before cutting the film on the installed film roller, in order to maintain the continuity of cutting, the film roller needs to be replaced in time, the controller 16 controls the two pressure levers 22 to move downwards to press the film on the base 1 without moving, so that the residual film on the film is separated from the film roller, the lock nut 51 is loosened to connect with the positioning lever 52, the positioning lever 52 is rotated, the positioning block 4 is rotated, the corresponding connecting seat 3 is moved towards the radial direction of the unwinding roller 2 through the operating handle 9, one end of the connecting seat 3 far away from the corresponding unwinding roller 2 is moved out of the sleeved positioning sleeve 6, the original film roller sleeve is disassembled, a new film roller is directly installed from one end of the unwinding roller 2, the positioning sleeve 6 is sleeved again after the new film roller is installed, the connecting seat 3 is moved through the operating handle 9, the positioning sleeve 6 is positioned between the connecting seat 3 and the positioning block 4, the positioning lever 52 is rotated to embed the positioning lever 52 into the notch 41 on the positioning block 4, the positioning sleeve 6 is positioned on the corresponding connecting seat 3 by the screw connection of the locking nut 51 and the other end of the positioning rod 52, then the film on the new film roller is connected with the original residual film through an adhesive tape, the controller 16 controls the pressing rod 22 to move upwards, so that the pressing rod 22 is separated from the contact with the film, the film can be driven, thereby ensuring the continuity of cutting, only one connecting seat 3 needs to be released from positioning the corresponding positioning sleeve 6, the film roller is directly arranged from one end of the unwinding roller 2 after the positioning sleeve 6 is moved out, then cup joint position sleeve 6 again on unreeling roller 2, fix a position sleeve 6 again and can accomplish the change of film roller, need not whole dismantlement unreel roller 2, again the installation unreels roller 2, also need not to make unreel roller 2 and driving piece 14 break away from reconnection, consequently, the film roller is changed comparatively conveniently.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. A cutting connection platform, which comprises a base (1), a transmission roller component and an unwinding roller (2), it is characterized in that the base (1) is provided with two connecting seats (3), the two connecting seats (3) are positioned at the same side of the transmission roller component, two ends of the unwinding roller (2) are respectively connected to the two connecting seats (3), one end of the unwinding roller (2) is sleeved with a positioning sleeve (6) and the unwinding roller (2) can rotate relative to the positioning sleeve (6), one connecting seat (3) can move relative to the radial direction of the unwinding roller (2) in the horizontal direction, and the connecting seat (3) is rotatably connected with a positioning block (4) which can position the positioning sleeve (6) on the connecting seat, and an adjusting piece (5) which can keep or release the positioning of the positioning sleeve (6) by the positioning block (4) and the connecting seat (3) is arranged between the positioning block (4) and the connecting seat (3).

2. The splitting and connecting platform according to claim 1, wherein an annular groove (61) is formed in an outer surface of the positioning sleeve (6), clamping grooves (7) are formed in the positioning block (4) and the connecting base (3), and the annular groove (61) of the positioning sleeve (6) is respectively embedded into the clamping groove (7) in the positioning block (4) and the clamping groove (7) in the connecting base (3).

3. A split docking platform according to claim 2, wherein bearings (62) are provided at both ends of the positioning sleeve (6), and the unwinding roller (2) is threaded on both bearings (62).

4. The slitting connection platform according to claim 1, 2 or 3, wherein the base (1) has two oppositely arranged upright posts (23), the two upright posts (23) are provided with guide grooves (8), the two connecting seats (3) are respectively connected with the two guide grooves (8) in a sliding manner, one of the upright posts (23) is provided with the guide groove (8) along the radial direction of the unwinding roller (2), the upright post (23) is provided with a lead screw, the bottom of the connecting seat (3) corresponding to the upright post (23) is fixed with a lead screw nut connected with the lead screw, and one end of the lead screw is provided with an operating handle (9).

5. The split docking platform according to claim 2 or 3, wherein the adjusting member (5) comprises a locking nut (51) and a positioning rod (52), the connecting seat (3) has a groove (31), one end of the positioning rod (52) is embedded in the groove (31), a connecting pin (10) is arranged in the groove (31), the positioning rod (52) is rotatably connected to the connecting pin (10), the positioning block (4) has a notch (41), the positioning rod (52) can be embedded in the notch (41), and the locking nut (51) is in threaded connection with the other end of the positioning rod (52) to enable the annular groove (61) of the positioning sleeve (6) to be respectively embedded in the clamping groove (7) on the positioning block (4) and the clamping groove (7) on the connecting seat (3).

6. A slitting and docking platform according to claim 1, 2 or 3, wherein the other end of the unwinding roller (2) is connected with a driving member (14), and the driving member (14) is a servo motor or a speed reducer.

7. The slitting connection platform according to claim 2 or 3, wherein a limiting block (11) is rotatably connected to the other connecting seat (3), a bayonet (111) is formed in the limiting block (11), the other end of the unwinding roller (2) is also sleeved with the positioning sleeve (6), an annular groove (61) of the positioning sleeve (6) is embedded into the bayonet (111), a locking rod (12) is rotatably connected to the other connecting seat (3), a notch (112) is formed in the limiting block (11), the locking rod (12) is embedded into the notch (112), and an adjusting nut (13) is screwed on the locking rod (12) to enable the limiting block (11) to position the positioning sleeve (6) on the other connecting seat (3).

8. The splitting and docking platform according to claim 1, 2 or 3, wherein the base (1) is further provided with a press rod (22) capable of moving up and down, the press rod (22) can move down and press against the base (1), both ends of the press rod (22) on the base (1) are connected with air cylinders (15), and the base (1) is further provided with a controller (16) for controlling the air cylinders (15).

9. The slitting and connecting platform according to claim 8, wherein the driving roller assembly comprises a first driving roller (17), a second driving roller (18) and a third driving roller (19), the first driving roller (17), the second driving roller (18) and the third driving roller (19) are rotatably connected to the base (1), a deviation correcting device (20) is arranged on the base (1), the deviation correcting device (20) is located at the second driving roller (18), an adjusting roller (21) is further rotatably connected to the base (1), and the adjusting roller (21) is located between the unwinding roller (2) and the two pressing rods (22).